c# - Can System.Net.Mail.Mailmessage be inherited? -


i tried inherit mailmessage class, can't. want introduce own properties in it.

when type public override , don't override options

here code

using system; using system.collections.generic; using system.linq; using system.web; using system.net.mail;  namespace foodmenu {     public class custommailmessage:mailmessage     {      } }

no doubt class can inherited there no sealed keyword in declaration. 

public class mailmessage : idisposable

may there no property can overrided.


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